The family of a Cook Islands fisherman found alive by the Royal New Zealand Air Force (RNZAF) after a week lost at sea say they are overwhelmed with relief and gratitude.

An RNZAF P-8A Poseidon crew found the man adrift near the northern Cook Islands.

The family of a Cook Islands fisherman found alive by the Royal New Zealand Air Force (RNZAF) after a week lost at sea say they are overwhelmed with relief and gratitude.